Typewriting-machine



H. E. BRIDGWATER. TYPEWFHTING MACHINE. 1

APPLICATION FILED OCT. 8, 1919.

Q E %Q Rm M N mw m AM NE v T d cvnrl T W W A m E a D1. H 4H H. E. BRIDGWATER.

TYPEWRITING MACHINE.

APPLICATION FILED OCT. 8, 1919.

Patented Apr. 26, 1921.

2 SHEETSSHEET 2.

I INVENTUR HERBERT E.BRiDGWATER a 5 HIE ATTORNEY WIT NEE 5 $5 fl/ZWL- M NITED STATES.

PATENT FFiCEQ HERBERT E. ismnewa'rnn, or SYRACUSE, NEW YORK, assmn g To REMINGTON TYPEWBITER COMPANY, or ILION, NEW YOIK, A ooaroRATIoN on NEW YORK.

- TYPEWRITING-MACHINE' To aZZ-whom'it concern:

Be it known that I, HERBERT E. BRIDG-' wa'ma a citizen of: the United States, and resident" of-.Syra'cu'se, in thecounty of Onondagarand State of New York, have invented certain new and useful Improyements in Typewriting-Machines, of wh1ch the following is a specification'.','- i

= My invent on relates to typewrlting machines and more particularly to line spacing mechanism therefor;

be main objects of my invention, gen

erally stated, are to provide a simple, compact, light and eflicient line spacing mechanism which may be manufactured at com paratively small cost and aids in the construction of a small, light, compactend highly efiicient yet comparatively 1nexpensive portablemachineb 'To the above and otherends which wlll hereinafter appear, my invention cons sts in the features of construction, arrangements of parts, and combinations of devices set forth in the following description and particularly pointed out in the appended claims. In the drawings wherein like reference characters indicate corresponding parts in. the different views,

Figure 1 is an enlarged detail left-hand end view of a carriage equipped with the line spacing mechanism of my invention and showing the parts as they appear in normal position. v

Fig. 2 is a like view of the same with parts broken away and showing the devices as they appear at the end of a line feed movement.

Fig. 3 isan enlarged detailvertical sectional View of the regulating member and some of the associated parts, the section being taken on the line w-w of Fig. 1, and looking in the direction of the arrow at said line. i

Fig. 4 is an enlarged detailv Vertical sectional view of the construction with parts omitted, the section being-taken on the line jl y of Fig. 6 and looking in the direction of the arrow at said line. i

Fig. 5' is an enlarged detail fragmentary front elevation showing the construction at the left-hand end of the platen.

Fig. 6 is an enlarged detail fragmentary vertical sectional view of the construction 1919. Serial imfsaaaeix taken on the line z-z of Fig. 1 and I Specification of Letters Patent. I Pat t d Anr. hjApplication-flle'd 0cto1ier8,

C the subject matf embodied in the.

present instance ina small, light, portable,

top strlke typewriting. machine, such as is more fully disclosed in the patent to A. W. Smith, No. 1,342,513 dated June 8, 1920. It w ll be understood however that the invention may be embodied in various styles of typewrltlng machines.

The platen frame or carriage. comprises a. base plate 1, preferably of sheet metal, wh ch extends throughout the length of the carriage and is formed with grooved tracks or 'raceways 2 to receive anti-friction balls or rollers 3 which are likewise received in oppositely disposed grooved rails 4 that are or may be supported for case shifting movement fore and aft of the machine. The carriage as a whole is thus supported to travel from side to side of the machine carrying withit a cylindrical platen 5. There are two sheet metal angle brackets, one of wh1ch is secured to the base 1 at each end thereof and which constitute the end plates for the platen frame or carriage ,and supports for the platen. Only the angle bracket 6,-at the left-hand end of the carriage, is shown but it will be understood that both brackets are in the main alike in constructlon, each having afoot-piece secured to the base 1 by screws 7 and upstanding end plate. I The platen is supported on a removable platen shaft 9 which extends through the platen and through a center bearing opening in a platen head 10 secured to the core of the platen at the left-hand end by screws 11. A cylindrical hub 12 projects outwardly from the platen head and constitutes a bearing for a line spacing wheel 13. This wheel is fixedly, though detachably, connected to the platen head by screws 14. A headed bushing 15 is seated in an opening in the end plate of the bracket 6. The head of this bushing bears against the-outer side of the end plate and the inner end extends beyond the plate and receives a collar or'washer 16. This washer is secured in place preferably by rivetingor swaging the inner end of rivets8 and an bears.

A line spacing lever, designated as a whole by the reference numeral 18 and preferably made of sheet metal, extends to both sides of, or above and below, the platen as best shown in Fig. 2. This lever is pivoted at its lower end to the end plate 6 by a shouldered pivot screw 19 held by a lock nut 20. The p1vota1 center 19 of the lever is below the platen and said lever is formed at its upper end with an offset finger piece 21. This lever is preferably curved or is of bow-formation as shown in Fig. 2 so that the finger iece 21 may normally extend forward of t e vertical center of the platen, as shown in Fig. 1, without the lever being obstructed in its movement by the platen shaft and washer 16.

From an inspection of Fig. 6 it will be side thereof and is supported and guided thereby. An integral fingeror arm 22'is formed on the lever about midway in the length thereof and extends parallel there with on the outer side of the end plate and with which it coiiperates to support and guide the lever in its line spacing movements; the end plate being thus embraced on opposite sides by the lever. A wire spring 23 is coiled about a pivot 24 supported by cars 25 formed on the bracket 6. The upper end of this coiled spring is bent around the rear edge of the line spacing lever at 26 so as to exert a forward pressure against the lever to return it to normal po' .sition. The other end of the spring is preferably connected to a carriage release lever, not shown, so that the spring has a twofold function of returning the release lever and the line spacing lever. For the purpose of the present case however the opposite end 27 of the spring is shown anchored against the bracket 6. The lever 18 is limited in its return movement by the cross piece 18 (which connects the finger 22 to the body of the lever 18) coacting with a sto 6 formed on the end plate 6 as shown in ig. 1. An off-set extension 28 is formed on the line spacing lever so as to constitute a support for a pivot 29 of a sheet metal line spacing lever 30. This pawl is formed with a barrel 31 that surrounds the pivot 29. The pawl is slotted to receive a wire spring 32 which surrounds the pivot 29 and is connected at one end 33 to the projection 28 and at its opposite end34 bears the pawl into engagement with the teeth of the line spacing wheel. The pawl is also formed with an integral off-set projection 36 which, as will be seen from an inspection of Fig. 5, extends across the plane of the end plate 6 of the carriage and it is adapted to be brought into contact with an inclined undercut edge 37 of the end plate at the end of the line spacing movement, as shown in Fig. 2. It will be understood that this part 37 constitutes an abutment, stop, or inchnedengaging face 37, which when cooperating with the pawl at the end of the line spacing movement acts in the nature of a cam and stop to force the pawl against, and lock it in engagement with, the line spacing wheel, thus preventing an overthrow of the latter and the platen con nected therewith. The cotiperating contact edge 38 of the projection 36 on the awl may be slightly beveled, as shown in igs. 1 and 2, to better fit it to coact in the manner described with the abutment, stop or cam 37 on the end plate.

The line spacing pawl is normally main tained out of engagement with the teeth of the line spacing wheel by a variable regulating or controlling, device which determines the extent of line spacing movement transmitted to the platen by the pawl. This regulatin device. is designated as a whole by the re erence numeral 39 and preferably is made of sheet metal in the nature of a plate pivoted at its lower end on a shouldered pivot' screw 40, and attached by said screw to the outer face of the end plate 6 of the platen frame. This regulating device is providedwith a contact edge 41 on which the pawl normally bears and which is in the nature of a shield that determines at what point in the throw of the line spacing pawl it is permitted to engage a tooth of the line spacing wheel. The plate 39 in the present instance may be adjusted in the plane thereof around its pivot 40 to either one of two positionsshown in Figs. 1 and 2. An off-set finger piece 42 is formed on the regulating device to facilitate its adjustment and suitable means are provided to retain the regulating device in the position to which it may be set or adjusted. In the present instance the plate 39 is preferably resilient, exerting a lateral or outward pressure at the upper end thereof and is slotted at 43 toreceive a headed shouldered screw 44 or looking projection threaded into a tapped opening in the end plate 6. This screw limits the pivotal movement of the plate in opposite directions and also tends to hold it 1n its adjusted position. Thus the under side of the head of this screw is beveled, as indicated at 45, for cooperation with the walls of the slot 43 in the regulating member. slightly enlarged openings 46 at the ends This slot is formed with thereof and in which the under beveled side of the head of the screw is adapted to be seated; the resiliency of the plate. tending to hold the parts thus engaged and prevent an accidental displacement of the regulat-' ing device from the position to which it is set or adjusted. When the regulating device is set in the position shown in F1 1, the line spacing pawl is effective to produce a sin le-tooth line space feed of thewheel 13, W ereas when the regulating device 39- is setin the position indicated in Fig. 2',

a feed of the wheel may be efi'ected for a distance of two teeth thereof.

In order to assure a proper line space feed 6 spring 49, secured by screws 50 to the lefthand bracket 6. This roller detent normally bears against the teeth of the wheel as shown in Fig. 4. In order to release the detent and enable the platen to be turned to any irregular line space position I have combined with the detent a releasing device. This device comprises a sheet metal plate 51 provided with a finger piece 52 and formedwith a central opening to enable it to receive a bearing on a hub-like portion 53 of the line spacing wheel 13 and have a pivotal movement concentrically with the platen. This.

plate has formed in the edge thereof a recess 54 that enables the detent roller 47 to engage the teeth of the line spacing wheel as shown in Fig. 4. Adjacent to the recess 54 is a second recess 55 at a greater distance from the axis of the platen than the recess 54. A side wall of the recess 54 is in the nature of a cam which coacts with the detent roller 47 when the finger. piece 52 is moved down as indicated in dotted lines in Fig. 4, thereby deflectin the detent roller away from the teeth 0 the line spacing -wheel and enabling the roller to be seated in the recess 55 where it is held out of cooperation with the teeth of the wheel. A second plate 56 is riveted at 57 to the releasing plate 51 and has a central opening therein to provide an additional bearing for the releasing device on the Iperipher of the platen head as shown in ig. 6. t will be understood that a movement of the releasing device to releasing position is effective to .throw off the detent roller in the manner described, and that the pressure of the spring 49 of said detent roller is then exerted against the releasing device and by the latter against the periphery of the laten head and against the line spacing w eel secured to the platen head. I, thus provide an effective retardin device or brake to hold the platen frictiona ly in any desired irregularly spaced position to which it may be turned.

When the detent is seated in the depression 55 in the releasin the spring 49 ho ds the releasing device against displacement from the position to which it has been set and holds it a ainst its tendency to turn with the platen. detent is received in the depression 54 in the hen the device the pressure of I releasing device said detent will prevent the releasing device from turning with the platen and from. being displaced from its normalposition. By applying the action of the spring 49 to the periphery of the laten head I am enabled to produce ane ective brake near the periphery ofthe platen.

I referably form the plate 56 with a depen ing segmental portion 58 which extends beyond the periphery of the platen at the lower portion of the latter and u to the rear side thereof where the work s eets are introduced into the machine. The paper apron 59 of the machine is shown in part in Figs. 5 and 6 from which it will be seen that the left-hand end of the paper apron terminates about coincident with the left-hand end of theplaten. The part or flange 58, as

.will be seen, extends beyond the platen nearthe left-hand end thereof and prevents the work sheet from extending over into the field of the line spacing mechanism. In short the part 58 acts in the nature of a side edge gage which prevents paper introduced into the machine from fouling on the line spacing mechanism and assures its proper introduction relatively to the platen.

I prefer to form the left-hand end plate with an off-set finger piece 60 in line fore and aft of the machine with the fin er piece 21 of the linespacing lever so as to acilitate an actuation of the line spacing lever by grasping the finger pieces 21 and 60 with the thumb and index finger respectively of the left-hand and exerting a pinching pressure on the finger pieces. Thls also enables the operator to more effectively control the carriage in the return movement of the latter without removing the hand from engagement with the finger pieces.

By pivoting the line space lever 18 on a different axis from that of the platen and at a pomtremote from the line space pawl, as shown and described, a desirable construction is provided in which only a comparatively small angular motion of the lever is necessary to effect a line space operation.

What I claim and desire to secure by Letters Patent, is a 1 In a typewriting machine, the combination of a line space wheel, a line space lever the body portion of which bears against one side of an end plate of the platen frame, a guide finger on said lever which bears against the. other side of said end plate, and a line space pawl carried by said lever.

2. In a typewriting'machine, the combination of a line space wheel, a sheet metal line space lever pivoted to an end plateof the platen frame and formed so. as to em brace said end plate on 0' posite sidesand be supported and guide thereby, and a line s ace pawl controlled by said ev nation of a line spacing wheel,.aline spac-i ing pawl, and variable means for determining the extent of line spacingmovement transmitted to the wheel at each actuat on of the pawl, said means comprising a plvotally mounted resilient controlling plate with which the pawl coacts, said plate having an aperture in the resllient body portion thereof, and a lockin projectlon received in said aperture to limit the plvotal movement of the plate and with which the plate ismaintained engaged by the lateral deflection of the body portion thereof due to its resiliency, whereby the plate is held in the position to which it may be adjusted.

5. In a typewriting machine, the combination of a line spacing Wheel, a line spacing pawl, and variable means for determining the extent of line spacing movement transmitted to the wheel at each actuation of the pawl, said means comprising an adjustable resilient plate having a slot therein with enlarged openings at its ends, a screw which extends into said slot and has a bevel head that coacts with the walls of said enlarged openings to retain the plate in either set position to which it may be adjusted, the resiliency of the plate maintaining an engagement between the plate and the beveled head of the screw.

6. In a typewriting machine, the combination of a'pla-ten, a line space wheel, a spring pressed roller detent which bears against the teeth of the line space wheel, a circular bearing member approximately the size of the line-space wheel and which is fixed to the platen adjacent to one end thereof, and ahand actuated detent releasing device that completely surrounds said circular bearing member and is supported by and mounted for pivotal movement thereon, said releasing device having a cam which coacts with said .detent to release it from the teeth of the line space wheel and cause the pressure of the spring of the detent to act on the periphery of said circular bearing member.

n a ty ewriting machine, the combif nation of a me space. whee1, a sheet metal detent is thrown ofi,fsaid releasing device:

spring-pressed roller detent wh1chbears-ff against the teeth of the'lineYspacin-g wheel-,- and a detent releasing device supportd ina-TO 'f-dependently of the detent and pivoted turn around the axisaoftheline gspa'cing' wheel andicause the pressure of thespring of thedetent to retard the platenwhengthe ;'i :i having two recessesthat extend in towardffi the axis of the platen, one in whichfit is received when the detentacts onthe teeth of the wheel and the other receiving the de- 7 tent when the latter is released, whereby the releasing device is held by the detent against rotative movement in either direction in either position to which said device may be adjusted.

8. In a typewriting machine, the combinat on of a platen, a line spacing wheel, a spring-pressed roller detent which'bears against the teeth of the line spacin wheel, and a detent releasing device pivoted to turn around the axis of the line spacing wheel, said releasing device extending beyond the periphery of the platen and constituting a gage with which a sideedge of a work sheet may contact. I

9. In a typewriting machine, the combination of 'a platen, a line spacin wheel, a spring-pressed roller detent w ich bears against the teeth ofthe line spacing Wheel, a detent releasing device pivoted to turn around the axis of the line s acing wheel, and a segmental depending flange carried by said releasing device and extending beyond the eriphery of the platen at and near the intro uctory side thereof and forming a gage for a side edge of a work sheet.

10. In a typewriting machine, the combination of a platen frame, a line space wheel, a hand actuated line space lever pivoted to an end plate of the platen frame, a sheet metal line space pawl carried directly by said lever and formed with an 101T- set projection, and an undercutsto formed in the edge of said end plate and with which said projection always engages at the end of its stroke to arrest the pawl and positively lock it against disengagement from the teeth of the wheel thus preventing overthrow of the latter and the platen controlled thereby irrespective of the extent of line spacing movement ofwthe platen. p

11. ha typewriting machine, the combination of a line space wheel, a sheet metal line space lever pivoted to an end plate of and an undercut combined locking and stopping portion formed integral with said end 130 plate and which is always enga d by said off-set projection irrespective o the extent of the hue space to limit the feed movement of the pawl and lock it in en agement with the teeth of the wheel and thereby prevent overthrow of the line space wheel and the platen controlled thereby.

12. In a typewriting machine, the combination of a platen, and line spacing mechanism therefor made entirely of sheet metal, said line spacing mechanism comprising a sheet metal lever pivoted at one end and provided at its opposite end with a finger piece, a sheet metal pawl pivoted to said lever intermediate its ends, and an adjustable sheet metal regulating device with which the pawl coacts and which determines the point in the throw of the pawl when it may engage the line space wheel.

13. In a typewriting machine, the combination of a platen, and line s acing mech-' anism therefor made entirely 0 sheet metal,

said line spacing mechanism comprising a',

sheet metal lever pivoted at one end and provided at its opposite end with a finger piece, a sheet metal pawl pivoted to said lever intermediate its ends, an adjustable sheet metal regulating devlce with which the pawl coacts and which determines the point in the throw of the pawl when it may engage the line space wheel, an integral off-set projection formed on said pawl, and a sheet metal end plate of the platen frame formed'with an integral combined locking and stop surface with which said projection on the fpawl engages to limit the feed'movement o the pawl and lock it in engagement with the teeth of the line space wheel. 7

Signed at S racuse, in the county of Ononda a and tate of New York, this 1st day of ct. A. D. 1919.

HERBERT E. BRIDGW'ATER.

v Witnesses:

ETEELYN M. KING, MARE Prom. 

